ABSTRACT: Background: In this work, we experimentally studied the ac-electric conductivity and dielectric constant of some lithium and sodium borate glasses doped with chromium oxide. These glass materials are of interest for science and technology. Materials and Methods: We introduced Chromium oxide with Low concentration of 0.1 and 0.7 mol. % to Lithium and Sodium borate glasses with chemical composition 37 mol % [M2O] - 63 mol % [B2O3] where (M=Li and Na)]).We successfully prepared the glass samples by melting quenching method. The X-ray diffraction pattern was carried out using Bruker AXS X-Ray analytical diffraction system. The ac - electrical conductivity, and dielectric constant measured at atmospheric pressure as a function of temperature (in the range from room temperature up to 500 0K).....
Key Word: alkali glasses, ac-conductivity, activation energy, dielectric constant
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